Electric regulation.



J. L. OREVELING. ELECTRIC REGULATION.

APPLICATION FILED 1,111.30,1911.

1,126,620, Patented Jan. 26, 1915.

l ml l l AS 17177416 A D OPPOJ'IA/G (0/ WITNESSES INVENTOR rounded by;.the solenoid coil 16-: in such- UNITED STATES PATENT OFF-ICE.

JOHNL. C BEVELING, OF NEW YORK, N. Y., ASSIGNOR T0 SAFETY CAR HEATINGAND LIGHTING COMPANY, A. CORPOBATION OF NEW: JERSEY.

ELECTRIC REGULATION.

To aZZ whom it may concern Be it known that 1, JOHN L. Cnnvnnmc, aresident of the city, county, and State of New York, haveinventedcertain new and I useful Improvements in Electric Regulation, asset forth in the annexed specification and drawing, forming a partthereof.

My invention pertains to that class of electric regulation wherein it isdesired to automatically regulate or govern an electric circuit and hasfor its particular object to provide means whereby an electric circuitmay be automatically governed ina predetermined manner.

As my invention is particularly applicable to that class of. systemswherein a generator driven at variable speeds is used to automaticallycharge storage batteries and operate lamps for other translatingdevices, it will be described with reference to such a system.

In the drawing, Figure 1 represents such a system wherein the essentialsof my invention are embodied. Fig. 2 is a modified formof a portion ofthe system shown in Fig.1.

In the drawing, 1 represents a dynamo or generator provided with a fieldwinding 2, having inseries'therewith a variable resist ance 3, indicatedas of the carbon pile variety.

#1 represents a bell-crank lever normally drawn in an upward directionas by the adjustable spring 5 in such manner as to tend to compress thecarbon pile, 3 and reduce the resistance thereof:

6 is an adjustable screw for limiting the across the generator circuitasbywires 10 and 11 in such manner thatexcitation of said coil 8 tends to.depress the lever 4 and increase resistance 3.

9 is adash pot resistingtoo sudden movement .of the core 7;

12 represents a bell-crank lever normally drawn in .an upward directionlimited by the adjustable stop 14, asby spring'13, in such manner as totend to reducethe resistance of the pile 3. The level- 12 isprovided; atone end. withthe 'core- 15 sur= Patented (1311.26, 1915.

Application filed January 30, 1911. Serial N 9. 605,436.

manner that energization of the said solenoid coil tends to depress saidlever, and in crease the resistance 3.

17 is a dash pot resisting too sudd'en movement of the core 15.

From the generator 1 the lead 18 is carried t0 one side of automaticswitch 19, which. may be of any of the well known types for completingthe circuit when the generator voltage. is substantially equal to thatof-the battery. A suitable switch for this purpose is shown in PatentNo. 7 07,7 63 granted to me August 26th. 1902. On the opposite side ofsaid switch the wire 20 is carried to the solenoid coil 21 from whichthe main 22 is carried to one side of the lamps or translating devices23, having their opposite terminals connected with the main 24,- carriedto one side of the variable resistance 25, in this instance shown as acarbon pile, the resistance of which is controlled by the lever 26normally drawn in a downward direction as by adjustable spring 27 insuch manner as to tend to reduce the resistance thereof. The lever 26 isprovided at one endwith the core 28 surrounded by the solenoid coil 29inshunt with the translating devices 23 in such manner that en citat ono-f-the coil 29 tends to raise the lever 26 and increase the resistance25.

30-is a dash pot resisting too sudden movement of the lever 26. From theopposite side of the variable resistance 25 the lead 3]. is carriedthrough the solenoid 16 to the generator 1. The wire 32 is carried fromthe main 2 1 130 the variable resistance device 33, the resistance ofwhich depends upon the position of the pivoted lever 3i, normally drawndownwardly as by the ad-- justable spring. 35, and provided with a core36 surrounded by the solenoid coil 21 insuch manner that pull upon thecore 36 'by said 'solenoid coil tends to increase the resistance 33. Thelever 34 is connected witlr the lead 31, as by wire 14. Thus it will beobvious that the resistance 33 is in shunt tothe carbon pile resistance25, and that the valuethereof' will depend upon the position of thelever 34. 37 is a dash pot resist 1 ing too sudden movement of the core36.

In Fig 1, the core 36 is shown as having wound thereupon a coarsepolarizing winding-38'flexibly connected withthe main 22 asbythe wire 39and-flexibly "connected with one side of the battery 41 as by the wire40. The opposite side of the battery is connected as by wire- 42 withthe lead 31.

In Fig. 2 like numerals are used to indicate like parts and the saidfigure represents a slight modification of the system shown in Fig. 1difi'ering only in that the polarizing winding 38, wound upon the core36, n1 Fig. 1, so as to act as a polariz ng coil is replaced by the coil43 in Fig. 2 1n such relation to the coil 21 as to be an addit ve orsubtractive winding when considered in relation thereto.

The operation of my invention is substantially as= followsz-1f thegenerator be running at such voltage that switch 19 shall be closed, andthe generator shall be supplying part of the current used by thetranslating devices,,current will flow through the coil 2 and resistance3 to the generator 1 and the generator may be governed by regulation ofthe resistance 3 in an obvious manner. Current will also flow throughthe wire 10, solenoid coil 8, the wire 11, tothe generator and I soadjust the spring 5 that when a certain desired voltage is reachedacross the generator, the same will be held constant throughout furtherincreases in speed of the generator, by the action of the solenoid coil8 increasing the resistance 3 against the action of the spring 5 in awell lmown manner. I also adjust the spring 13 in such manner that whena desired maximum current output of the generator is flowing in solenoidcoil 16 any increase over this amount will.

depress the lever 12 and increase the resistance 3 in such manner as tohold the generator current from exceeding this amount. The currentflowing from the generator to the translating devices as above mentionedwill flow through the lead 18,

- switch 19, wire 20, solenoid coil 21, main 22,

translating devices 23, main 24, resistance 25, to lead 31, and alsofrom main 24 through wire 32, resistance device 33, lever 34, and wire44 to the lead 31, and thence to the genorator through the solenoid coil16. As the generator has been taken as running at such speed as tosupply part of the current to the translating devices, the remainingportion supplied thereto will flow from the battery 41 through wire 40,polarizing winding 38 and wire 39 to the main 22, through translatingdevices 23, main 24, carbon pile 25, lead 31 and wire 42 to the batteryand also from main 24 through wire 32, resistance device 33, lever 34,wire 44, lead 31 and wire 42 to the battery. The winding 38 upon thecore 36 is in such direction that current flowing from the batterythrough the said winding as above mentioned sets up amangetomotive-force in a direction the reverse of that set up by thecurrent flowing from the generator through the solenoid coil 21, and

thus tends to reduce the value of theresist- I battery 41 and wire 42 tothe lead 31 and ance 33 in an obvious manner, which tends to reduce theresistance in shunt to the resistance 25'and thus to reduce the totalresistance in the lamp or translation circuit. If now the generatorvoltage be increased until it be supplying the entire current used inthe translating devices and supplying some current to the storagebattery, that portion supplied to the storage battery will flow throughthe wire 39, winding 38, wire 40,

energize the winding 38 in such direction that its magnetization of thecore 36 will tend to assist the coil 21 in raising the said core, andincreasing the value of the resistance 33, the value of which by properadjustment of the spring 35 can be made to depend both upon whether thecurrent be flowing into or out of the battery 41 and the dimen sions ofsaid current. I now so adjust the spring 35 that, if the battery becharged at substantially its maximum rate, a considerable resistance, asmay be desired, is inserted in shunt to the resistance 25 at 33. I nowso adjust the spring 27, that when the normal voltage is reached acrossthe trans latingcircuit and thus across the solenoid coil 29 anyincrease in voltage above this point will increase the resistance 25 insuch manner as to hold the voltage upon the translation circuitsubstantially constant. It will thus be obvious that the voltageoperated carbon rheostat 25 tending to hold the voltage upon thetranslating circuit constant has in shunt thereto a variable resistance10o taking a considerable of the load away from the carbon resistanceand relieving the same at times when it would otherwise be required todo the most work and dissipate the most heat and that the value of theresistance 33 thus placed in shunt with the resistance 25 depends uponcurrent supplied by the generator to the battery and to the translatingdevices, and also upon current supplied by the battery to thetranslation circuit.

The foregoing description with reference to Fig. 1, can readily befollowed with reference to Fig. 2, it only being necessary to note thatcurrent flowing to and from the battery only acts to assist or weakenthe effect of the solenoid coil 21, whereas in Fig. 1 the winding 38 byacting as a polari7 ing coil may serve to cause the current flowing toand from the battery to create the attraction or repulsion respectivelybetween the core 36 and the coil 21.

In the foregoing description I have described a construction whereinthere is a resistance medium whose resistance varies with variations inpressure thereon, together with a lever operating upon one end of saidmedium to vary the resistance thereof, and a lever independentlyoperating upon the other end of said medium, and an electromagnet forcontrolling the operation of each lever;'but, I do not herein as thesame a part of this application, inasmuch as the drawing is a merediagrammatic representation of one type of system embodying my inventionand the description is merely one use of the same, and it will beobvious that wide departure may be made in the details of constructionand operation, without departing from the spirit and scope of myinvention which is set forth in the following laims:

1. The combination with a generator, a translation circuit, and meansfor varying the voltage upon the translation circuit affected by theoutput of the generator, of means whereby said variation due to theoutput of the generator is dependent upon the voltage of the translationcircuit.

2. lhe combination with a translation circuit, of means whereby changesin output of the generator cause changes in the resistance -of thetranslation circuit, and means whereby the extent of such changes in thetranslation circuit resistance depends upon the voltage across thetranslation circuit.

3. The combination with a generator, a storage battery and atranslationcircuit, of means whereby variation in the output of the generatorcauses a compensating variation in the resistance in the translationcircuit and means whereby the degrees of said compensation efi'ected bythe output of the generator vary in accordance with the storage batterycurrent. I

i. The combination with a dynamo or generator, and a translationcircuit, of means for inserting resistance in the translation circuitdepending upon the output of the generator and means for determining theeffective amount of resistance inserted depending upon the voltageacross the translation circuit.

5. The combination with a generator, translating devices, a magnet inseries with the generator voltage regulating means in series with thetranslating devices and means whereby said magnet operates said voltageregulating means, of independent voltage regulating means whereby thevoltage across the translation circuit determines the effective amountof variation caused by the action of said magnet.

6. The combination with a dynamo, and a translation circuit, of meansfor regulating the voltage upon the translation circuit dependent forits action upon the output of the generator and means for governing theeta generator, and

feet of such action dependent upon the voltage of the translationcircuit.

7. The combination with a dynamo, a storage battery and a translationcircuit, of means for varying the voltage upon the translation circuitdependent for its action upon the output of the'generator, means forgoverning the effect of such action depend ent upon the voltage of thetranslation circuit and means for adjusting'the amount of effectproduced by said output actuated means dependent upon the batterycurrent.

8. The combination with a generator, a main circuit containing a magnet,a translation circuit, and means whereby said magnet inserts resistancein the translation circuit, of means for varying the effect produced bysaid resistance thus inserted comprehending a magnet in shunt to thetranslation circuit.

9. The combination with a generator, a main circuit containing a magnet,a work circuit, and means whereby said magnet inserts resistance in thework circuit, of a shunt for varying the effect of said resistance thusinserted, and a magnet for operating said shunt affected by. thetranslation circuit voltage.

-10. The combination with a generator, a translation circuit and meansfor regulating the voltage upon the translation circuit dependent uponthe output of the generator, of means for altering the effect of suchvoltage varying means, depending for its action upon the voltage acrossthe translation cir cuit.

11. The combination with a generator and its main circuit, a magnet insaid circuit, a storage battery and translating devices, a variableresistance between the storage battery and the translating devicesoperated by said magnet, of a variable re sistance in shunt to saidresistance between the battery and translating devices, dependent inamount upon the voltage across the translation circuit.

12. In a system of electrical distribution, translating devices and avoltage regulator for the translating devices comprehending a rheostatgoverned by the voltage at the translating devices, having always anappreciable resistance and voltage varying means in shunt relationthereto having during its operation a point of negligible resistance.

13. Means for governing the voltage upon an electric circuit having abattery in operative relation thereto comprehending a voltage operatedcarbon rheostat in said circuit a rheostat adapted to short circuit saidcarbon rheostat and means for operating the same afi'ected by thedirection of battery current.

14-. A system of electrical distribution comprehending a generator, astorage bat- 'tery, translating devices, a voltage operated rheostat forgoverning the voltage upon the translating devices and means in shunt tosaid voltage operated rheostat adapted to short circuit the same andmeans for operating the same ati'ected by current in the batterycircuit.

15. Means for regulating an electric circuit comprehending a carbon pileresistance in said circuit, voltage operated means operatively connectedto said circuit for controlling said carbon pile, means for reducing theresistance in said circuit below the minimum resistance of said carbonpile and means for operating the same affected by current in the batterycircuit.

16. The combination with a supply circuit a storage battery and atranslation circuit, of means for regulating the voltage upon thetranslation circuit comprehending voltage operated means affecting saidcircuit, voltage afi'ecting means cooperating with said last namedmeansand means for operating the same afi'ectedbybattery current.

17. The combination with a supply circuit, a storage battery and atranslation cir-- ,cuit, of means for regulating the voltage upon thetranslation circuit comprehending voltage operated means afi'ectmg said011'- cuit, voltage afiecting means cooperating with said last namedmeans and means for operating the same affected by variations indirection of battery current.

18. The combination with a supply circuit, a storage battery and atranslation circuit, of means for regulating the voltage upon thetranslation circuit comprehending voltage operated means afi'ecting saidcircuit, voltage affecting means cooperating with said last named meansand means for operating the same affected by variations in direction andmagnitude of battery current.

19. The combination with a supply ,circuit, a storage battery and atranslation circuit, of means for regulating the voltage upon thetranslation circuit comprehending J OHN L. CREVELING.

Witnesses H. P. HALL,

CHAS. McC. CHAPMAN.

